Die



`une 7, 14938.

C. A. CADENBACH DIE ' -Filed Nov. 1e, 1935 I CMQ/57ml. so@ M' L ph 2 5 f,

6 m@ B 4 @W @J 6 7 4 y 2. eeOeoeo e3 G aseos 3 4 N a w 0 QA@ Patented June 7, 1938 UNITED STATES DIE Christian A. Cadenbach, St. Louis, Mo., assigner to Independent Die & Supply Company, St. Louis, Mo., a corporation of Missouri Application November 16, 1935, Serial No. 50,245

13 Claims.

This invention relates generally to dies and particularly to dies such as are used in the manufacture of shoes for perforating the shoe parts.

The object of thepresent invention, generally 5 stated, is toprovide a die of the character referred to wherein the cutting elements may be removed and replaced with facility by an unskilled operative and without the use of tools.

A further object of this invention is to provide l a die construction in which the cutting element is held in position on a base by a stripper plate.

Other objects will become apparent to those skilled in the art when the following description is read in connection with the accompanying l drawing, in which:-

Figure 1 is a plan view of a die constructed in accordance with the present invention.

Figure 2 is a plan view of the die of Figure 1 with a stripper plate thereof removed.

Figure 3 is a sectional view taken along line 3-3 of Figure 1.

Figure 4 is a view corresponding to Figure 2 bu showing `a different cutting element.

Figure 5 is a detail sectional view taken along line 5-5 of Figure 2.

Figure 6 is a detail View of the cutting element holding device employed in accordance with the present invention.

In accordance with the present invention a die 72o is constructed and arranged so as to have the cutting parts thereof readily removable from those parts which are usable throughout the life of the die. This permits the cutting parts to be removed and replaced so as to accommodate cutg.; ting parts of different designs and thus render such parts as the base and stripper plate adaptable for various operations. In accordance with the present invention the cutting parts are so con nected to the base that they may be readily relo moved and substituted by an unskilled operative and without requiring the use of tools. Likewise the stripper plate may, if desired, be removed and substituted without the use of tools. Although the device of the present invention is7 as above stated, readily demountable by an unskilled operative, the device is so constructed and arranged that, except at such times that it is deliberately disassembled, the device is sufciently rugged and secure towithstand ordinary yusage and abuses without liability to accidental disassembly.

Referring now to the drawing for one illustrative embodiment of the invention the'device may comprise a base I upon which is mounted cutting element 2 which in the embodiment illustrated is composed of a plurality of cutting tubes 3 having their upper edges sharpened so as to penetrate the leather or other materials to be operated upon. A stripper plate 4 is also employed and in the embodiment provided with a series of apertures 5, one for each of the cutting tubes 3. 5

In accordance with the present invention the cutting element 2 may be mounted upon base I as through an intermediate sub-base 6 and maintained against lateral or sidewise displacement thereon by holding device or plug 1 which will be described in detail hereinafter. In the cutting element 2 is an aperture 8 arranged to be alined with a corresponding aperture 9 inthe base I and sub-base 6 to accommodate the plug I. Supplementing the plug 'I may be any number of pins l5 I0 mounted either in the cutting device 2 or the sub-base 6 and arranged to cooperate with an aperture in the other element.

While the pins Ill actively maintain the cutting element 2 against sidewise displacement relative 20 to base I they do not act to prevent actual removal of the cutting element from the base. Removal of the cutting element from the base is prevented through the medium of stripper plate 4 acting through plug `I.

In the embodiment illustrated in the drawings the stripper plate 4 is resiliently mounted upon base I by means of a plurality of supports II, I2, I3 and I4,`which may be composed. of telescoping members I5 and I6 encircled by a coil spring I'I, as shown clearly in Figure 5. Member I5 may, as shown in the drawing, be provided with a headed part I8 for holding stripper plate 4 in position thereon. Stripper plate 4 may then be provided with a plurality of key slots I9, 2li, 2i andY 22, one for each of the supports II, I2, I3 and I4. The key slots I 9, 20, 2l and 22 are provided with an enlarged end portion 23 of a diameter sufcient to take over head I3,rwhereas at their opposite ends they are narrowed down to an extent such that when the head I8 is in position therein the stripper plate can not be lifted oif.

Suitable means may be provided for moving stripper plate 4 and locking the same in lposition on supports II, I2, I3 and I4. One suitable means for accomplishing this result is shown in Figure l and may comprise a lever 26 suitably pivoted as at 25 to the stripper plate and having` a curved end portion 26 for cooperating with the adjacent support I2. The curved end portion may be so arranged that upon movement of lever 24 to the broken line position, illustrated in Figure l, the head portion I8 of support I2 Will be moved out of the narrow end of slot 2Il into the large end thereof, thus effecting a rotation of the stripper plate about support I4 as an axis and moving the stripperY plate into the broken lineposition'shown in Figure 1. When this is done the headed-por-` tion I8 of eachY of the supports II, I2 and yI3 is moved into the enlarged portion of the corresponding key slot and these three slots may then be unseated from the respective heads so that the shield may then be moved to the left so as to bring the head of support I4 into the enlarged portion of slot 22. When it is desired Yto replace the stripper plate, the operations are carried out .inV the reversed order-namely, slot 22V is first placed upon the head of support I4 and moved into the narrowend thereof, then'the other slots are placed upon their corresponding supports and lever 24 moved back into the position shown in dotted lines in Figure 1, during which movement end 26 cooperates with supportY I2 to rotatefstripper plate 4 in a counterclockwise directionV around support I4 as an axis.

In order to lock lever 24 Vin this position a hole V2`I maybe provided in stripper plate. 4 and. a lug 28 provided on lever 24 so VVVthat whenV inV full line position the lug 29 will .be seated in hole 2'I and thus prevent accidental movement of lever 24.

vIt will be Yunderstood,of course, thatdlever 24 has suflicient spring to permitV it lto' beexed for Y withdrawal of lug 28 from'hole 21. lWith the arrangement shown in the drawing where the slots "'I9, 20, 2l and 22extend'in1diferent directions,

that is to say, where the enlarged ends of the slots are not on the same side ofthe narrow ends,

Vit israpparent that the stripper plate cannot be VYaction` of spring I1 a similar yieldable VVarrrangef mentkis provided in plug 1. In order to accom-` plish this plug 'I may be composed'` of a'barrel 29 within which irs-mounted'a pin30, the head 3| of whichbears against the underside of stripper plate 4. Barrel 29 may be provided with a shoulder 32 arranged to seat in a recess in cutting device 2 and a spring 33 may be interposed between shoulder 34 in Ybarrel 29 Yand head 3|V so as tobias theseparts apart. Thus when'the stripper. plate is in Vits uppermost position, shown in the drawing, kShoulder 32is seated in position holding Vbarrel 29in holes 8V and 9 sopasV to prevent sidewise displacement while at the same timethe action of the shoulder-32 lthroughrspring, 33 holds the Y cuttingY device VV2Y down against the sub-base G,

but, nevertheless, permits stripper plate 4 to move against the action of springs I'I and 33.

VThe cutting deviceA 2 may, as particularly shown in Figure 2 be composed of a plurality of parts so vthat the same die may be used onVV large shoes and small shoes.V VIn order to accomplish this an extra die section 42 maybe provided hav-` ing a series ofcutting tubes 43 constituting an extension of the design formedby tubes 3. V'I'he section 42 may, therefore, be removed from the device without molesting the main portiontheref of 2 and the same stripper plate may be used whether the section42 Vis' employed' or not.

As particularly shown in Figure 4 the sectional cutting device may also be arranged so as to form different designs. In'the embodiment i1- lustrated in Figure 4 a main sectional'part 52v is provided with a series of tubes 53 which may be understood as formingrthe basic design. Any numberof auxiliary sections, such as 62, having a series of tubes 63 arrangedin the desired manner to `complete the design formed vby Vtubes 53 may then be employed supplementing section 52. In either case the respectivecutting sections may Ybe held in the position, as hereinbefore described y Yin accordance with the vpresent invention.

. From the foregoing description it is apparent Y that the. invention accomplishes its objects and since the operation thereof will be clear from the foregoing description further reference to the op- Y eration ofthe device is deemed unnecessary.

Since it is apparent that theillustrative embodimentsl hereinbefore describedV are susceptible of many modifications without departing from the spirit of this invention, it is to be distinctly understood that the invention is not limited Vto the embodiments hereinbefore disclosed in' detail but that such modications'and the use of suchfindividual features and sub-combinations of fea- VYtures as do not depart fromthe spirit Vofv this invention are,`although not'specifically described Y herein, contemplated by and within'the scopeof the appended claims.'

Y Having thusy describedthe invention, Vwhat claimed is: l

1. A device of the kinddescribed,comprising,` a base, a die element'tting on said base, means for Vpreventing sidewise displacement between` said die and base, and a stripper platek carried by said base overlying saidY die element and biasing the same against the base.

2. .A device of the kindA described, comprising,

a base, a die element fitting on saidbase, Vsaid baseand die element havingcooperatingapertures, plugs tting in said apertures and freely liftable from the apertures in both said `mem-V bers, and means for holding said plugs against removal.'V 1

3. A device of the kind described,rco'mprising, a'base, a die element ttin'g on said base, 'said base and die element having, cooperating aper-'f tures, plugs tting insaid apertures and freely liftable therefrom, said plugs having a resilient part, and a shield carried by said 'base'andf bearing against theV resilientpart of said pins.

4. A device of the kind described, comprising, abase, a die element fitting onV saidwbase, said base and dieelement Vhaving cooperating aperjtures, Vplugs fitting in said apertures and freely Y liftable therefrom,jsaid plugs havinga resilient part, and a shield resilientlyY mounted on vsaid base'for movement agari'nstthe actionlofV the Vresilient part of Ysaid pins. A i 5. A device of the kind'described,rcornprising,

aV base, yieldable supports on said base,a shield carriedV by said supports, a dieinterp,osedi be tween said shield and said base, andyieldable means bearing against` s aid shieldgfor .biasing said die againstV said base. Y

p r6. A device of the kind described, comprising, a base, yieldable supports on said base, a shield shield for'moving the shieldrelative tothe base to seat the supports in said' key slots.

7. A device of theki'nd described, comprising.

a base, yieldable supports on said basefa shield havinga'series of key slots arranged in non-v parallel relation, said key slots cooperating with 1 having a series ofY key 4slots ,for cooperating Vre" Y spectively with Ysaid supports, and means on said 1 the respective supports, and means for rotating said shield about one of said supports to seat and unseat the other supports in their respective key slots.

8. A device of the kind described, comprising,

a base, a plurality of yieldable headed supports on said base, a shield having a series of slots for cooperating one with each of said supports, said slots having an enlarged portion at one end to take over the heads of said supports, said slots arranged so that the enlarged portions of all but one of said slots extend in the same rotational direction With reference to said one slot, and a lever mounted on said shield and cooperating with one of said supports for rotating said shield about said one slot.

9. A device of the kind described, comprising, a base, a pluralit57 of yieldable headed supports on said base, a shield having a series of slots for cooperating one with each other of said supports, said slots having an enlarged portion at one end to take over the heads of said supports, said slots arranged so that the enlarged portions of all but one of said slots extend in the same rotational direction with reference to said one slot, a lever mounted on said shield and cooperating with one of said supports for rotating said shield about said one slot, and means for locking said lever in the position Whereat the heads of the supports are removed from said enlarged portion -of the slots.

10. A device of the kind described, comprising, a base, a sectional die element iitting on said base, said base and each of said die sections having cooperating, apertures, plugs fitting in said apertures, and a stripper plate arranged to hold said plugs against removal.

11. A device of the kind described, comprising, a base, a sectional die element iitting on said base, said base and each of said die Vsections having cooperating, apertures, plugs tting in said apertures, said plugs having a resilient part, and a resiliently mounted shield carried by said base and movable against the action of the resilient parts of said plugs.

12. A device of the kind described, comprising, a base, a die element tting on said base, said base and die elementY having cooperating apertures, plugs fitting in said apertures and freely removable therefrom, and a shield extending over said plugs and constituting the only means for retaining the same against removal.

13. A device of the kind described, comprising, a base, a die element fitting on said base, said base and die element having cooperating apertures, plugs tting in said apertures, a shield extending over said plugs in spaced relation to the die element, each of said plugs having a part engaging the die element and a part engaging the shield, said parts being yieldable relative to each other.

CHRISTIAN A. CADENBACH. 

